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1/*===- count.c - The 'count' testing tool ---------------------------------===*\2 *3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4 * See https://llvm.org/LICENSE.txt for license information.5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6 *7\*===----------------------------------------------------------------------===*/8 9#include "llvm/Support/AutoConvert.h"10#include <stdio.h>11#include <stdlib.h>12 13int main(int argc, char **argv) {14#ifdef __MVS__15 if (enablezOSAutoConversion(fileno(stdin)) == -1)16 fprintf(stderr, "Setting conversion on stdin failed\n");17 18 if (enablezOSAutoConversion(fileno(stderr)) == -1)19 fprintf(stdout, "Setting conversion on stderr failed\n");20#endif21 size_t Count, NumLines, NumRead;22 char Buffer[4096], *End;23 24 if (argc != 2) {25 fprintf(stderr, "usage: %s <expected line count>\n", argv[0]);26 return 2;27 }28 29 Count = strtoul(argv[1], &End, 10);30 if (*End != '\0' && End != argv[1]) {31 fprintf(stderr, "%s: invalid count argument '%s'\n", argv[0], argv[1]);32 return 2;33 }34 35 NumLines = 0;36 do {37 size_t i;38 39 NumRead = fread(Buffer, 1, sizeof(Buffer), stdin);40 41 for (i = 0; i != NumRead; ++i)42 if (Buffer[i] == '\n')43 ++NumLines;44 } while (NumRead == sizeof(Buffer));45 46 if (!feof(stdin)) {47 fprintf(stderr, "%s: error reading stdin\n", argv[0]);48 return 3;49 }50 51 if (Count != NumLines) {52 fprintf(stderr, "Expected %zu lines, got %zu.\n", Count, NumLines);53 return 1;54 }55 56 return 0;57}58